GrimmSpeed Air Oil Separator Black WRX (2002-2007) STI (2004-2018) Volkswagen 6mm wall thickness

6mm wall thickness

W204 C Class Saloon

volume over factory)

The Perrin Front Mount Intercooler (FMIC) kits for the 2002-2007 WRX and 2004-2007 STI are massive upgrades

GrimmSpeed Air Oil Separator Black WRX (2002-2007) STI (2004-2018) Volkswagen 6mm wall thicknessGrimmSpeed has a unique design for the Subaru WRX, STI and Legacy GT which allows you to keep your PCV valve while separating the oil out of the crankcase and head ventilation air. None of the other competitors on the market are able to vent both. The unit is very compact and efficient, it bolts directly on to the factory oil cap location. You will no longer have to keep tabs on your oil level and or empty the catch can like on most standard cans as